<!doctype html>
<html lang="en">
	<head>
		<title>Subscribe select event of TerraDraw</title>
		<meta
			property="og:description"
			content="This plugin provides a function getTerraDrawInstance to fetch the instance of TerraDraw itself. Using this instance, you can use all APIs supported by TerraDaraw. For example, the below code is to subscribe TerraDraw's select event to show selected feature as GeoJSON string."
		/>
		<meta charset="utf-8" />
		<meta name="viewport" content="width=device-width, initial-scale=1" />
		<link rel="stylesheet" href="https://unpkg.com/maplibre-gl/dist/maplibre-gl.css" />
		<script src="https://unpkg.com/maplibre-gl/dist/maplibre-gl.js"></script>
		<style>
			body {
				margin: 0;
				padding: 0;
			}
			html,
			body,
			#map {
				height: 100%;
			}

			#overlay {
				position: absolute;
				top: 5px;
				right: 5px;
				width: 300px;
				max-height: 300px;
				overflow-y: auto;
				background-color: rgba(255, 255, 255, 0.6);
			}
		</style>
	</head>
	<body>
		<script src="https://cdn.jsdelivr.net/npm/@watergis/maplibre-gl-terradraw@latest/dist/maplibre-gl-terradraw.umd.js"></script>
		<link
			rel="stylesheet"
			href="https://cdn.jsdelivr.net/npm/@watergis/maplibre-gl-terradraw@latest/dist/maplibre-gl-terradraw.css"
		/>
		<div id="map"></div>

		<div id="overlay"></div>

		<script>
			const map = new maplibregl.Map({
				container: 'map',
				style: 'https://demotiles.maplibre.org/style.json',
				center: [0, 0],
				zoom: 1,
				maxPitch: 85
			});

			const drawControl = new MaplibreTerradrawControl.MaplibreTerradrawControl({
				modes: ['polygon', 'select', 'delete'],
				open: true
			});
			map.addControl(drawControl, 'top-left');

			const drawInstance = drawControl.getTerraDrawInstance();
			if (drawInstance) {
				drawInstance.on('select', (id) => {
					const snapshot = drawInstance.getSnapshot();
					const features = snapshot?.find((feature) => feature.id === id);
					selectedFeature = JSON.stringify(features);

					const overlayElement = document.getElementById('overlay');
					overlayElement.innerText = selectedFeature;
				});
			}
		</script>
	</body>
</html>
